//得到焦点触发事件
function OnfocusFun(element, elementvalue) {
	if (element.value == elementvalue) {
		element.value = "";
		element.style.color = "#000";
	}
}

//离开输入框触发事件
function OnBlurFun(element, elementvalue) {
	if (element.value == "" || element.value.replace(/\s/g, "") == "") {
		element.value = elementvalue;
		element.style.color = "#999";
	}
}
